Wood-heel-turning machine



Nov. 1, 1927. 1,647,574

N. A. MONFILS WOOD HEEL TURNING MACHINE y Filed July 12, 1925 2 Sheets-Sheet l J6 if f2 /0 62 I im o f l i l r. ry' l (j )4 40 l 66 .g4-f* /6 46 H W i.

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- N. A. MONFILS WOOD HEEL TURNING vMACIIINE Filed July l2, 1925 2 Sheets-Sheet 2 Patented Nov. 1, 1927.

entren STATES 4raiizrrr oFFiCE.

NAPOLEON A. MONFILs, or HAVERHrLL, MAssACHUsETT's, AssGNon To UNITED 'SHOE MACHINERY CORPORATION, or PATnRsON, 'NEW JERSEY, A CORPORATION OF NEW JERSEY.

WooD-HEnL-TURNING MACHINE.

Application sied .Tiny 12, flea-na.V serial Ng. caisse.

This invention -relates to machines for the'necessary characteristics will be filedsinto turning heels and is illustrated A in connection with a machine for turning wood heels. These machines as ordinarily constructed comprise a jack for holding the vwood heel blank arranged to have horizontal and vertical movement, and rotary movement about vertical and horizontal axes, with relation to a cutter arranged upon a vertical spindle. These movements are produced by the Operator who moves the jack by means of a handle, the movement being guided by three cam mechanisms. One of these is a form or collar which contacts with an adjustable gage nearthe cutter. This regulates the depth of cut in thework, and the size and shape of the seat of the heel are regulated largely by the shape of the form and the adjustinent of the gage. A second cam mechanism comprises a horizontal guide or so-A called lower track which regulates the vertical movement of the jack as a whole. The third cam mechanism is the so-called upper track which tilts the jack around its rhorizontal pivot as it is turned varound its vertical pivot by the operator. Different shapes and styles of heels are produced by varying:

the characteristics of these cam mechanisms in conjunction with the shape of the kedge of the cutter. made is a double machine containing two cutters, the two sides of the'heel being cut separately in order that the cuts made may run with the grain of the wood in the blank.

Tt has been found advisable to mount the tracks, especially the upper track, so that track for all styles of heels by changing thisV pivotal adjustment.A A separate lower track is generally used for each heel even though the same upper track' is used for all, and

The machine as ordinarily the lower track.. i

y A constructed heretofore, the pivotal mounting ofthe upper track has beenplaced at the ends ofthe track near the cutters and while niountings so constructed have proved quite successful and have gone into universal commercialuse, there are certain problems connected with themaki'ng of wood heels in which a different location of the pivotal mounting hasbeen found to be advantageous in that` itlreduces the time ltaken in making certain adjustments toa small frac` tion of that used under the heretofore known practice. Accordingly, a feature of the present vinvention consists in mounting one or both of the tracks upon a pivot which is located a substantial distance in. front` of the,

rear ends of the track` In the embodiment of the invention illustrated in the drawings, thenupper track is pivotally mounted at its frontmost portion. This portion .,which, as will be seen, corresponds to the finish of the cut, thus maintains its height adjustment substantially unchanged irrespective of pivotal adjustment of the track.

Another important-feature of the invention consists in making the track very readily `detachable from the machine. It is thus easily removed for any necessary repair with greater ease than has been possible with heretofore known constructions. This is secured in, theembodiment of the invention shown by supporting the track at its center or front portion and` detachably connecting it to the machine at its ends. A toothed or interlocking'v` connection may advantageously be provided, as illustrated, thus securing ease and positiveness in adjustment.

These and other features of the invention comprising certain combinations and arrangements of parts will be understood from thefollowing description of a preferred embodiment thereof selected for purposesv of illustration and shown in the accompanying drawings inl which, l t

Fig. l iS aperspectlve View ofA the machine, f

Fig. 2-is a detail illustrating the upper track shown in Fig. l.

Fig. 3 is an alternative construction for the upper track.

Fig. 4 is a detail of the lower track, and

Fig. 5 is a detail of the upper track.

The machine comprises two vertical spindles 10 carrying cutters 12. These cutters are shaped to the contour desired on the heel and rotate in opposite directions. J ust below the cutters are gages 14 which are horizontally adjustable toward and from the jack 15. Centrally7 positioned between the cutters is a vertical shaft 16 upon which is mounted a swinging bracket 18 carrying at its outer end a shaft 20. The shaft 2O carries the jack at its upper end. There is free vertical movement between the shaft 2O and the shaft 16. This may be secured by making either shaft (20, as herein shown) relatively slidable Vin the bracket and in many machines the bracket slides relatively to both shafts.

The shaft 2O has at its lowei` end an integral, projecting, horizontal arm 22, which may be equipped with a roller and which rides upon the lower track 24. This track is mounted upon brackets 26 which are vertically adjustable by a bolt-and-slot connection 28 upon the frame of the machine. In the form shown in the drawings, each end of the lower track is connected to its corresponding bracket by three screws. The cen- .ter screw 30 holds the track to the bracket and the two screws 32 on each vside can be set up to tilt the track into any desired position about an axis passing through the two center screws.

The upper track 34 is carried upon a bracket '36 which is likewise vertically adj ustable by bolts and slots 38 upon the frame of the machine. This bracket as shown carries at its front center a post 40 upon which the upper track 34 rests and is pivotally adjustable. The rear ends of the track in the form shown in Figs. 1 and 2 carry lugsq 42 which ht into notches 44 arranged in standards 46 at the rear ends of the brackets.

the carrier and is grasped by the operator in` swinging the jack. This handle, or a roller connected with it, moves around upon the upper track as the jack is swung, thus tilting the work, and the arm 22 at the same time rotates around on the lower track,

breasted surface of the blank adjusts its ,1

position along what we may call the lengthwise dimension of the heel. ,j n

The Carrier 50 has mounted upon it a cani or pattern or form 64 which has'substantially the shape' of the seat of the heel. This is generally made of wood so that it can be easily shaped by the man who sets up the machine, and during a'heel cutting operation of the machine, the cam 64'rests against the adjustable gage 14 under the cutter in use, upon which gage it turns as the operator swings the jack, to control the depth of cut. rThe operator in using the machine swings the bracket 1S to bring the form 64 into contact with a gage 14 and swings the jack around as far as it will go to the side of the.,

machine upon whiclrthat gage is mounted. This will bring the side of theblank near the breast surface into the corresponding cutter. The operator then pulls the handle around until it points straight toward him, as shown'in Fig. 1, keeping the form and gage in contact. This will shape one side of the heel. The operator then swings the bracket around to the other side of the -machine to the other cutter andrepeats the operation, thus cutting the other side of the heel. Y

In setting up a machine to out a new heel, the operator 'first grinds his critters to the profile of the model heel given him and puts them in the machine and then cuts blank after blank, making one adjustment after another and gradually approximating the characteristics of the heel it is desired to cut- The upper track, being used for all heels, will not have its shape changed, but will only be adjusted as to vertical position and slope. The form 64 and the lower track, being individual to the heel, are filed and shaped as desired. The machine adjustments are as follows: (l) the bottom track can be raised or lowered through the bolt and slot connection 28; or tilted by means of the screws 32; (3) the upper track can be raised or lowered through the bolt and slot connection at 3S; (4) or tilted about the post 40 by the adjustment at 46; (5) the gage 14 can be moved in or out; (6) the gage 62 can be moved in or out; the angular relation between the cutting edge of the cutter bladesV 12 and the axis of the spindle, considered in a vertical plane through the spindle ai-is, can be Vchanged by regrinding or tilting the cutter' in the cutter head. Changing any one of these adjustments will alter many ofthe heel characteristics to varying extents. In general, ythe vertical adjustment `ofl Vthe lower. track largely determines t-he vertical position of the cut on the blank, and when its optimum position has been lfound as regards this characteristic, it cannot be changed much, and other faults in the heel shape have to be dealt with by changing rother adjustments.

If we assume that-,the lower track has been properly located,l it will be clear thatthe slope or pitch at the back of the heel and the length of the top portionof the heel are regulated by the height above theloor of the point 66 upon the upper track at which the cutting stops in connection with the position of the lower track. In other words, taking any given condition ofthings, the length of the heel top can be shortened by tilting the upper track farther up abouti'ts ends, as in the construction described in United States Letters Patent No. 17,247,335, granted N ov. 20, 1917 to H. W. Russ, which will raise the point 66, o r by raisingthe upper track as a whole by means of the slots in the'brackets which will likewise raise this point. Neglecting the limitation as to the lower track just imposed, it could also ybe doneby lowering the lower track which will let down the carrier and` thereby tilt the jack farther into the cutter,v since the handle must remain supported upon the upper track. Y

The preceding examples will be found useful in discussing the treatment, by the help of the present invention, of a difficulty which frequently arises in set-ting up the machine for new heels. y

It is frequently found that when other characteristics of a newheel have been closely approximated, the shape of the heel remains considerably in error. The shape ofthe heel top is controlled largely by theangle or slope of the upper track. This question` will be Vdiscussed and its treatment explained l as carried out in connection with the illustrated machine. F or example, considerr the tracks as shown in F 2 as if it were in two dierent positions of adjustment. Its front end rests always upon the post and therefore the elevation 'of the points 66'is not substantially changed by a change inthe adjustment as its rear ends. Therefore, as indicated above, the vlength of-the heel top will not be substantially altered by this adj ustment since these points 66 and the lower track remain unchanged'. But at any-point between the points 66 andthecnd of the track, the jack is tilted more around itsk horizontal` aXis 52, in one adjustmentV than in the other.` At theI beginning of the out when the handle is swung-'around towardthe rear of themachine, the 'breast edge of the heel topfwill bev cutwiderwhen the endof the track `is raised than when it is depressed. This is because as the jack is tipped up on its horizontal pivot `52 the edge o f the wooden blank is thrown past the nearest point of the surface of revolution which is generated'by the cutter edge so that the cutter will cut somewhat farther out on the wooden blank. This effect diminishes until we reach a point about half way around to the point 66, where tilting the jack up upon its horizontal pivot 52 begins to throw the blank farther into the cutter and thereby causes it lto cut more deeply at this point. Putting the matter in a few words, depressing the ends of the track as shown in Fig. 2 `will narrow the breast edge of the heel top portion and swell it out at points between the breast to the back and vice versa. It is clear that with the machine of the present invention this correction to the shape of the heel top can be made simply by changing the angle of elevation, or slope, of the track, as described. With the machine as heretofore known this was not true,'since when the slope of the trackwas changed in order to shape the heel top, the absolute elevation of the front end of it which corresponded to the point 66 was changed also, since the pivoting-was done around the rear ends of the track. This required the bracket 36 to be vertically adjusted in order to bring the points 66 back to the same vertical position which they hadoccupied, and more than trebled the .time taken by the operator inv effecting the adjustment. It is obvious that the amount of the vertical adjustment of the brackets required in dealing with the abovedescribed problem is regulated by the posia tion of the pivot around which the track is adjusted. It isamaximum when the track is adjustedaround its Vrear ends and is subv stantially Zero when the track is pivoted aroundits front end or center. Another advantage of the present invention consists in the ready removal of the' upper track.l The nuts 48 merely have tol be loosened `and the track can be lifted right out of the machine. No hinges or screws have to be removed and the operation takes only two or three seconds. Another advantage inherent inI the track disclosed in Figs. l and 2 resides in the absolut-e positiveness with which any angular adjustment ofthe track can be secured. The notches may be numbered or otherwise marked and there is substantially no possibility for a mistake by an operator. in` setting' the machine according to the recordr corresponding to a heel which it is desiredv to cut. In the machines heretofore known the angular adjustment of the track is seelevation with a protractor inserted between the lower tace of the track and the bracket. Inasmuch as these faces are rough castings,

it is diliicult to set the track twice alike by this method.

In Fig. 3 is shown a modification of the track structure. In this form the brackets are formed with slots in which heads of pins 72 mounted in the ends of the track engage. Thumb nuts 74; on the pins hold the track in any adjusted position. The advantage oi this torm is that any desired condition of angular-ity can be accomplished, whereas angular adjustment ot the track shown in Fig. 2 is discontinuous.

As actually constructed by me the standards i6 are made with their notches about 21/2O apart. rIhey are mounted in the brack ets by lugs 7 6 and can be readily removed and replaced by other standards having their notches so placed as to divide the intervals shown in Fig. 2.

The' condition ot things in Fig. 2 has been somewhat exaggerated in some respects in order to show the different possibilities ot the apparatus. It is necessary in cutting some kinds ot heel to tilt the upper track downward and outward instead of upward and outward trom theL machine. This possibility is shown in Fig. 2. Actually the proportions of the machines in ordinary use are such that thevv downward and outward slant of the track would be secured by a very low post 78, possibly in connection with an alternative standard with its notches arranged on a different circle. It is ot course possible to pivot the lug upon the track, in which case the direction in which the notches are cut is immaterial.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent ot the United States is 1. In a machine of the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged tor compound movement comprising swinging horizontal movement, and rotation about a horizontal axis, and arcam track tor controlling the rotation about the horizontal axis as the jack is swung by the operator, said i cam track being rotatably adjustable about an axis substantially in front oit' the rear end of the track and being elsewhere supported only at two points behind the said axis.

2. In a machine of the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged for compound movement comprising swinging horizontal movement, and rotation about a horizontal axis, a cam track tor controlling the rotation about the horizontal axis as the jack is swung by the operator, and means for permitting the rear end of the cam track fr to be positively positioned relatively to its Y axis,

-cam track to hold it in ditiere'nt adjusted positions, said cam track and member having a detachable interlocking connection between them. Y

4. In a machine of the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged for swinging horizontal movement, vertical movement, and rotation about a horizontal axis, and a cam track 'for controlling the rotation about the horizontal axis as the jack is swung by the operator, said cam track being pivotally mounted at its Jfront portion and elsewhere supported at only one point on each side to the rear ofthe iront, portion.

5. In a machine ot the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged tor swinging horizontal movement, vertical movement, and rotation about a horizontal axis, and a cam track for controlling the rotation about the horizontal axis as the jack is swung by the operator, said track beingy detachably secured to the machine at its rear end and being detachably supported at a point substantially forward of its rear end by mere gravitational contact with the machine.

6. In a machine of the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged Jfor swinging horizontal movement, vertical movement, and rotation about a horizontal axis,yand a cam track tor controlling the rotation about the horizontal axis as the jack is swung by the o-perator, said track being supported at one point by mere abutting contact with the machine and at another point being detachably connected with the machine.

7. In a machine of th-e class described, a rotating cutter, a jack supported in operative relation to the cutterand arranged for swinging horizontal movement, vertical movement, and rotation. about `a horizontal and a cam track Vfor. controlling the rotation about the horizontal axis as the jack is swung by the operator, said track being supported at one point by mere abutting contact with thev machine and at another point being detachably and adjustably connected with the machine.

8. In a machine of the class described, a rotating cutter, a jack supported in operative relation to the cutter and arranged for operate With the rear end of the cam track svvinginghorizontal movement, vertical to hold it in different adjusted positions, movement, and rotation about a horizontal said cam track and member having a toothed 10 axis, 'a cam track having its rear end near engagement between them. i

5 the cutter for controlling the rotation about In testimony Whereoin` I have signed my the horizontal axis as the jack is swung by name to this specification. the operator, and a member arranged to eo- NAPOLEON A. 'MONFILS CERTIFICATE OF CORRECTION.

Patent No. 1,647,574. Granted November 1, 1927, to

NAPOLEON A. MONFILS.

It is hereby certiied that. error appears in the prirted speefieaion of the above numbered patent requiring correction as follows: Page 3, line 42, after the word "heel" insert the word "top"; same page, Eine 49, for the word "tracks" read "track" and line 54, for the word "as" first ocourrenee, read "at"; and that the said Letters Patent should be read with these corrections therei.. that the same may conform to the record of the ease in the Patent Office. Signed and sealed this 17th day of July, A. D. i928.

M. J. Moore,

(Seal) Acting Commissioner of Patents. 

